Yeah, that's where I started looking for quest mods. As far as I can see, the best ones there are companion mods, which don't really suit my stealthy thief. Otherwise, it seems a short list, which I found disappointing. It's interesting that Oblivion modders have tackled every aspect of appearance, gameplay and interface tweaking but they don't embrace storytelling with the same verve (as far as I can see, not having followed the game closely).